Socket Screw, Self Drilling Screws, Machine, Flat Head Screw, External Hex
Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
1/2"-20, 1/2 in, 1/4"-20, 1/4 in, 9/16"-12, 9/16 in, 3/8"-16, 3/8 in, 1-1/8"-7, 1-1/8 in
1/2", 130 mm, 140 mm, 8", 2 7/8"
Brass, Steel, Nylon, Plastic, Titanium, Steel, Alloy Steel
Button, Standard, Ultra-Low-Profile Standard, Low-Profile Standard, Flanged Button
Phillips, Hex, Socket, External Square, Slotted